63819479 has 4 divisors (see below), whose sum is σ = 67573584. Its totient is φ = 60065376.

The previous prime is 63819449. The next prime is 63819523. The reversal of 63819479 is 97491836.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63819479 - 2¹² = 63815383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63819419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1877027 + ... + 1877060.

It is an arithmetic number, because the mean of its divisors is an integer number (16893396).

Almost surely, 2^63819479 is an apocalyptic number.

63819479 is a deficient number, since it is larger than the sum of its proper divisors (3754105).

63819479 is a wasteful number, since it uses less digits than its factorization.

63819479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3754104.

The product of its digits is 326592, while the sum is 47.

The square root of 63819479 is about 7988.7094702461. The cubic root of 63819479 is about 399.6235604276.

The spelling of 63819479 in words is "sixty-three million, eight hundred nineteen thousand, four hundred seventy-nine".